D1 330 vs 350L
 

Flying back to the US from ATH and have to transfer in either JFK or ATL. ATL is the somewhat controversial but also comfortable 350 ex LATAM and JFK is the 330-300 older product. ATL routing is a little bit better for me because we can clear immigration there vs JFK and also the 2nd leg will be shorter, but its a 9ish hour flight so would rather have the better seat for that leg. Opinions on the two options?

Edit- flying with my wife so stepping over neighbor isnt an issue

I just flew the A330-300 AMS-DTW. Pretty good for an "older" product. Personally, the thing that keeps me away from the ex-LATAM A350 is lack of direct aisle access for some seats.

2-2-2 is to be avoided if traveling solo. I find the A330 fine.

You can always sit in a middle row seat if you want direct aisle access on the A350. I would choose a more modern aircraft even if the layout isn't as ideal. Supposedly the jetlag would be better on the A350 as well due to the cabin pressurization system improvements.

Personally I haven't flown on the ex-LATAM 350 yet, but I have plenty of times on the 'older' 330, and I find those 330 D1 seats perfectly comfortable and like the window seats with direct aisle access. From what I've seen, I'd rather the 330 seats and config over the ex-latam 350 2-2-2 when traveling by myself.

If you're ok with the limited privacy, the ex-LATAM A350 is actually quite nice for sleeping (or napping, in your case of a daytime flight). I've found the seat to be a little wider than other DeltaOne seats and the "ottoman" instead of a footwell lets your feet be free, giving plenty of room to stretch out! Another benefit, as you are traveling with your wife, is that you both will be close enough to carry on a conversation, as opposed to the A330-300, where you are angled and have to awkwardly lean forward to see each other. There isn't much room on the armrest to put your stuff--that's my one gripe.

Especially since the routing via ATL seems to work better for you, I'd go with it. The only thing that would sway me toward JFK would be if the DeltaOne lounge is open and you wanted to try that out.

LATAM A350s are bit easier to get over the person next to you. There's a bit extra space so unless totally immobile you shouldn't have issue. I also find the seats very comfortable. Even solo I have no issue with A35L in window seat. (I just flew to AKL actually on it and enjoyed it)

Thanks all for the feedback. Two follow up questions, have all the 350's got wifi now? Does ATL not have a D1 Lounge and is there any arrival lounge option?

If ATL is your final destination, you might not be able to physically access a lounge to use on arrival.

At this point, the only airports scheduled to get D1 lounges are JFK, LAX, BOS (and maybe SEA, though I forget if that's been confirmed).

They should have wifi
However TPAC you may not have service due to lack of satellite by provider.

No airport currently has a D1 lounge. ATL isn't on list currently to get one. JFK/LAX are 1st.

The ex-LA seats, while 2-2-2, are vastly more comfortable. Since it's a daytime flight, though, I wouldn't worry as much about the sleeping (ottomans always win over footwells for me). Since it's ex-LA, however, there won't be air vents at each seat (and to be fair, there aren't air vents on the DL A359s in the middle seats of D1). So if you're a fan of circulation/feeling cooler, the A333 would be better.

The last ex-LATAM A350 I was on had WiFi for $25 (I assume this means it was GoGo?)

If you have an AmEx, the new AmEx lounge in ATL concourse E (international arrivals) is pretty nice.